Struct TemporalOrderingConstraint 

pub struct TemporalOrderingConstraint { /* private fields */ }

Temporal ordering constraint for validating time-based relationships.

This constraint ensures that temporal data follows expected patterns, including:

• Chronological ordering between columns
• Business hour compliance
• Date range validation
• Event sequence validation
• Time gap analysis

The constraint supports various temporal data types and timezone considerations.

Implementations

impl TemporalOrderingConstraint

pub fn new(table_name: impl Into<String>) -> Self

Create a new temporal ordering constraint.

Arguments

• table_name - Name of the table to validate

Examples

use term_guard::constraints::TemporalOrderingConstraint;

let constraint = TemporalOrderingConstraint::new("events");

pub fn before_after( self, before_column: impl Into<String>, after_column: impl Into<String>, ) -> Self

Validate that one timestamp column comes before another.

Arguments

• before_column - Column that should contain earlier timestamps
• after_column - Column that should contain later timestamps

pub fn before_or_equal( self, before_column: impl Into<String>, after_column: impl Into<String>, ) -> Self

Validate that one timestamp column comes before or equals another.

pub fn business_hours( self, timestamp_column: impl Into<String>, start_time: impl Into<String>, end_time: impl Into<String>, ) -> Self

Validate that timestamps fall within business hours.

Arguments

• timestamp_column - Column containing timestamps to validate
• start_time - Start of business hours (format: “HH:MM”)
• end_time - End of business hours (format: “HH:MM”)

pub fn weekdays_only(self, weekdays_only: bool) -> Self

Set whether business hours validation should only apply to weekdays.

pub fn with_timezone(self, timezone: impl Into<String>) -> Self

Set the timezone for business hours validation.

pub fn date_range( self, timestamp_column: impl Into<String>, min_date: Option<impl Into<String>>, max_date: Option<impl Into<String>>, ) -> Self

Validate that timestamps are within a specific date range.

pub fn max_time_gap( self, timestamp_column: impl Into<String>, max_gap_seconds: i64, ) -> Self

Validate maximum time gap between sequential events.

pub fn group_by(self, column: impl Into<String>) -> Self

Set grouping column for time gap validation.

pub fn allow_nulls(self, allow: bool) -> Self

Set whether to allow null timestamps.

pub fn tolerance_seconds(self, seconds: i64) -> Self

Set tolerance for temporal comparisons in seconds.

Trait Implementations

impl Clone for TemporalOrderingConstraint

fn clone(&self) -> TemporalOrderingConstraint

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Constraint for TemporalOrderingConstraint

fn evaluate<'life0, 'life1, 'async_trait>( &'life0 self, ctx: &'life1 SessionContext, ) -> Pin<Box<dyn Future<Output = Result<ConstraintResult>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Evaluates the constraint against the data in the session context.

fn name(&self) -> &str

Returns the name of the constraint.

fn column(&self) -> Option<&str>

Returns the column this constraint operates on (if single-column).

fn description(&self) -> Option<&str>

Returns a description of what this constraint validates.

fn metadata(&self) -> ConstraintMetadata

Returns the metadata associated with this constraint.

impl Debug for TemporalOrderingConstraint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TemporalOrderingConstraint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TemporalOrderingConstraint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.